Among children with total serum IgE > 100 kIU/L, the association between total asthma and CPA was not weakened by the exclusion of children who were members of a swimming club (OR = 1.89; p = 0.0092), who had access to a backyard pool (OR = 1.82; p = 0.0072), or who had been swimming babies (OR = 1.95; p = 0.0053). The gene discussed is IGHE; the disease is asthma.